IRF is a special unit created for the release of the tribute album TRF Respect Idol Tribute, that features members from five different idol groups. The group name stands for "IDOL RAVE FACTORY".
- Shoji Mei (TOKYO GIRLS' STYLE)
- Suzuki Yuriya (Cheeky Parade)
- Tachibana Yurika (Idoling!!!)
- Hibi Mikoto (Dream5)
- Pour Lui (BiS)
- [2012.12.19] TRF Respect Idol Tribute (#1 BOY MEETS GIRL, #7 IRF with DJ KOO from TRF - BOY MEETS GIRL -DJ KOO PARTY MIX-)